Ford Ranger Check Engine Bulb Size

The Ford Ranger check engine bulb uses a 194 size bulb for this application. The replacement chart covers vehicle production years from 1993 to 1996.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1993-1996	194

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

The Ford Ranger (1993-1996) uses the 194 bulb size for the check engine indicator across all four model years in this specification.
The 194 bulb follows the ANSI standard, meaning it conforms to a recognized North American specification used in both the United States and Canada.
This bulb is a T10 miniature wedge type, which refers to its wedge-shaped base that holds the bulb in place without a separate socket pin, relying instead on tension from the housing.
The 194 bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger and light commercial vehicles of this era.
At 3.78 watts, the 194 bulb draws a relatively low amount of power, which is typical for small indicator lamps on an instrument cluster.
The T10 wedge form factor is a widely used platform in automotive instrument panels, meaning the 194 bulb shares its physical base type with a broad range of other indicator applications across many vehicle makes.